Inventory.getPrefabs C# (CSharp) Method

    public void getPrefabs()
    {
        if (prefabCanvasWithPanel == null)
            prefabCanvasWithPanel = Resources.Load("Prefabs/Canvas - Inventory") as GameObject;
        if (prefabSlot == null)
            prefabSlot = Resources.Load("Prefabs/Slot - Inventory") as GameObject;
        if (prefabSlotContainer == null)
            prefabSlotContainer = Resources.Load("Prefabs/Slots - Inventory") as GameObject;
        if (prefabItem == null)
            prefabItem = Resources.Load("Prefabs/Item") as GameObject;
        if (itemDatabase == null)
            itemDatabase = (ItemDataBaseList)Resources.Load("ItemDatabase");
        if (prefabDraggingItemContainer == null)
            prefabDraggingItemContainer = Resources.Load("Prefabs/DraggingItem") as GameObject;
        if (prefabPanel == null)
            prefabPanel = Resources.Load("Prefabs/Panel - Inventory") as GameObject;

        setImportantVariables();
        setDefaultSettings();
        adjustInventorySize();
        updateSlotAmount(width, height);
        updateSlotSize();
        updatePadding(paddingBetweenX, paddingBetweenY);
    }

    [MenuItem("Master System/Create/Hotbar")]        //creating the menu item
    public static void menuItemCreateInventory()     //create the inventory at start
    {
        GameObject Canvas = null;

        if (GameObject.FindGameObjectWithTag("Canvas") == null)
        {
            GameObject inventory = new GameObject();
            inventory.name = "Inventories";
            Canvas         = (GameObject)Instantiate(Resources.Load("Prefabs/Canvas - Inventory") as GameObject);
            Canvas.transform.SetParent(inventory.transform, true);
            GameObject panel = (GameObject)Instantiate(Resources.Load("Prefabs/Panel - Hotbar") as GameObject);
            panel.GetComponent <RectTransform>().localPosition = new Vector3(0, 0, 0);
            panel.transform.SetParent(Canvas.transform, true);
            GameObject draggingItem = (GameObject)Instantiate(Resources.Load("Prefabs/DraggingItem") as GameObject);
            Instantiate(Resources.Load("Prefabs/EventSystem") as GameObject);
            draggingItem.transform.SetParent(Canvas.transform, true);
            Inventory inv = panel.AddComponent <Inventory>();
            panel.AddComponent <InventoryDesign>();
            panel.AddComponent <Hotbar>();
            inv.getPrefabs();
        }
        else
        {
            GameObject panel = (GameObject)Instantiate(Resources.Load("Prefabs/Panel - Hotbar") as GameObject);
            panel.transform.SetParent(GameObject.FindGameObjectWithTag("Canvas").transform, true);
            panel.GetComponent <RectTransform>().localPosition = new Vector3(0, 0, 0);
            Inventory inv = panel.AddComponent <Inventory>();
            panel.AddComponent <Hotbar>();
            DestroyImmediate(GameObject.FindGameObjectWithTag("DraggingItem"));
            GameObject draggingItem = (GameObject)Instantiate(Resources.Load("Prefabs/DraggingItem") as GameObject);
            draggingItem.transform.SetParent(GameObject.FindGameObjectWithTag("Canvas").transform, true);
            panel.AddComponent <InventoryDesign>();
            inv.getPrefabs();
        }
    }